2. Explain COMP, COMP-2, COMP-3 and Display. What are the difference between Continue and Next Sentence? Why does SOC7 occur?

Question

Accepted Answer

Explanation of COMP, COMP-2, COMP-3, Display, Continue, Next Sentence, and SOC7.

COMP is a binary data type, COMP-2 is a packed decimal data type, COMP-3 is a packed decimal data type with sign, and Display is a character data type.
Continue is used to transfer control to the next statement within the same paragraph, while Next Sentence is used to transfer control to the first statement of the next paragraph.
SOC7 occurs due to a data exception error, such as an invalid numeric data or decimal point overflow.

Accepted Answer

SOC7 error : SOC7 error in mainframes is due to a variable or field holding values which it is not intended to hold. Example of one such scenario would be a numeric field holding characters like a ,b etc. This is a data execution abend .

Accepted Answer

Comp: will store data in 4 bytes, floating point form. Comp 2: will store data in 8 bytes in hexa decimal form. Comp 3: It's a packed decimal usage and which occupies one digit of a space.

Accepted Answer

COMP, COMP-2, COMP-3, and DISPLAY are data types used in COBOL programming language.

COMP: It stands for Computational binary, and it is used to store numeric data in binary format. The length of the field in bytes is even.

COMP-2: It stands for Computational-2 or double precision binary, and it is used to store numeric data in double precision binary format. The length of the field in bytes is always even.

COMP-3: It stands for Computational-3 or packed decimal, and it is used to store numeric data in a compressed format, where each digit is represented by a nibble. The length of the field in bytes is always odd.

DISPLAY: It is used to store alphanumeric data such as letters, digits, and special characters. The length of the field in bytes is determined by the number of characters.

In COBOL, Continue and Next Sentence are two statements used for flow control. Continue statement transfers the control to the next iteration of the current loop. It is similar to the "continue" statement used in other programming languages. Next Sentence transfers the control to the next statement after the period "." It is used to skip one or more sentences in a paragraph.

SOC7 (System OverCoded 7) is a runtime error that occurs when an arithmetic operation is performed on a non-numeric field or invalid numeric data is used. It occurs when the program tries to read beyond the length of a field or when a non-numeric value is used in an arithmetic operation. SOC7 errors are difficult to trace because the program does not halt when the error occurs. It is important to check the data definitions and input data to avoid SOC7 errors.

2. Explain COMP, COMP-2, COMP-3 and Display. What are the difference between Continue and Next Sentence? Why does SOC7 occur?

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